It has been said... 
AGRICULTURE is the 
BACKBONE of the NATION 
and for fifty-nine years the McMahon Company has 
been selling to and buying from farmers and ranchers 
who help make up this most important industry. It is 
our aim to bring you the finest first in Seeds, Feeds 
and Agricultural Chemicals. To assure you of the 
best possible ‘cleaning and treating job on your seed, 
we have installed the most up-to-date equipment at 
both Rapid City and Sturgis. We will continue to do 
J. Re MCMAHON 
our best to serve you well. 
A WORD ABOUT FEED ... 
It seems to us that the first obligation we have toward our feeder customers is 
to supply them with feeds which will enable them to do a better job of feeding 
and increase their profits. 
When we offer you Cooper Quality Guarded Feeds, we feel we are fulfilling this 
obligation. The good quality and efficiency of these scientifically balanced and 
blended feeds is evidenced by customers’ reports of good results obtained 
economically. 
The animal fat ingredient, Fatsso, which is contained in all Cooper Feeds, 
supplies animals with added heat energy, increases feed efficiency and pal- 
atability. You get better results with all classes of livestock and poultry when 
you feed Cooper Quality Guarded Feeds with Fatsso. 
Here’s a tip for poultry raisers — when you start your chicks this Spring, use 
Cooper*s medicated* Starter and Grower. The sulfaquinoxaline contained in 
Cooper Chick Feeds guards their health and gets them off to a better start. 
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‘4 E COOPER FEEDS GUARD YOUR PROFITS 
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SEC. 34.66 P.L. & R. 
U.S. POSTAGE 
PAID 
Rapid City, S. Dak. 
Permit No. 5 
RETURN POSTAGE GUARANTEED 
McMAHON COMPANY, INC. 
Rapid City, So. Dakota 
Library - 
US Dep't of Agriculture 
Washington 25, D.C, 
S. Dak. 
CCT Wf oer ae 
